A large-span hovering overweight multi-layer staircase structure and its installation method

Abstract

The present invention discloses a large-span hovering overweight multi-layer staircase structure and its installation method. The large-span hovering overweight multi-layer staircase structure includes a multi-layer frame structure, a large-span hovering staircase and a large-span suspended staircase connected to the outer cantilever of the multi-layer frame structure, a hovering cantilever support structure connected between the large-span hovering staircase and the multi-layer frame structure, and a suspended cantilever support structure connected between the large-span suspended staircase and the multi-layer frame structure. Through the design of the large-span hovering and suspended staircases, the structure of the present invention is easy to install and connect, and can be suspended on the outside of the structure. The staircase structure is not connected to the main structure, but is connected to the outer cantilever structure extending from the main structure at both ends. Its structure is unique with staggered staircases and a large span, which can take into account both the practicality and aesthetics of the staircase. Through the setting of the hovering cantilever support structure and the suspended cantilever support structure, it is beneficial to ensure the two-way force of the cantilever staircase and transfer the force to the main structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of cantilever stairs, and particularly relates to a large-span hovering overweight multi-layer stair structure and an installation method thereof. Background Art

[0002] During the construction of steel structures, the construction of stairs is also a key point. Generally, the construction of stairs is for indoor construction, which lacks ornamental value, and its force is relied on the frame beam and the stair columns themselves. However, with the diverse requirements of the application scenarios and functions of steel structures, the existing stairs can no longer meet the growing demands. Moreover, for the installation of large-span multi-layer stairs, corresponding designs are also required. The designed stairs also need to have good applicability and ornamental value. At the same time, its force relies on the overall force-bearing capacity of the main structure. Compared with general indoor stairs, it can better conform to the design intentions of open buildings such as large shopping malls and garden-style office buildings. Summary of the Invention

[0003] The present invention provides a large-span hovering overweight multi-layer stair structure and an installation method thereof to solve technical problems such as the design, support connection, and installation of suspended hovering stairs.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A large-span hovering overweight multi-layer stair structure includes a multi-layer frame structure, a large-span hovering stair and a large-span suspended stair connected to the outside cantilever of the multi-layer frame structure, a hovering cantilever support structure connected between the large-span hovering stair and the multi-layer frame structure, and a suspended cantilever support structure connected between the large-span suspended stair and the multi-layer frame structure;

[0006] The large-span hovering stair includes a group of parallel zigzag-shaped beams, secondary member beams connected between adjacent zigzag-shaped beams, a bottom sealing plate connected to the bottom of the zigzag-shaped beams, a platform plate connected to the horizontal part at the top of the zigzag-shaped beams, and a tread plate connected between adjacent platform plates; both ends of the zigzag-shaped beams are respectively connected to the main force-bearing cantilever beam structure, and the main force-bearing cantilever beam structure is fixedly connected to the hovering cantilever support structure;

[0007] The hovering cantilever support structure includes a hovering cantilever support end and a hovering cantilever extension end, and the hovering cantilever extension end is correspondingly connected to the main force-bearing cantilever beam structure;

[0008] The large-span suspended staircase includes a group of obliquely arranged suspended main load-bearing staircase beams that are parallel in the long upward direction, suspended main load-bearing connecting beams connected between adjacent suspended main load-bearing staircase beams, suspended lightweight conversion columns connected to the suspended main load-bearing staircase beams, suspended shaped load-bearing beams connected to the suspended lightweight conversion columns, suspended secondary structure connecting beams connected between adjacent suspended shaped load-bearing beams, suspended wide platform slabs connected to the horizontal area at the top of the suspended lightweight conversion columns, and suspended wide steps connected between adjacent suspended wide platform slabs; both ends of the suspended main load-bearing staircase beams are respectively connected to suspended cantilever support structures;

[0009] The suspended cantilever support structure includes a suspended cantilever support end, a suspended cantilever extension end connected to the extended side of the suspended cantilever support end, and a suspended cantilever column connected to the connection between the suspended cantilever support end and the suspended cantilever extension end; the suspended cantilever column is correspondingly connected to a multi-story frame structure.

[0010] Further, the multi-story frame structure includes frame columns, frame beams vertically connected to the frame columns, and frame inclined columns connected to the bottom-layer frame columns; the frame columns and frame beams form a multi-story frame building body, and the frame inclined columns are arranged at the top of one side of the frame columns and intersect with the frame columns extended on the other side; a large-span suspended staircase is arranged at the intersection of the frame inclined column and the frame column.

[0011] Further, the corrugated shaped beam is in a rising stepped broken line shape and includes a horizontal section and an inclined section; the corrugated shaped beams are arranged at intervals in the width direction of the staircase, and the corrugated shaped beams are steel beams and are spliced and fixed in sections.

[0012] Further, the sealing bottom plate is arranged longitudinally along the length of the corrugated shaped beam, a platform slab is arranged at the top of the horizontal area of the corrugated shaped beam, and a tread slab is arranged on the inclined section of the corrugated shaped beam; secondary member beams are connected at intervals in the horizontal area of the corrugated shaped beam.

[0013] Further, the suspended main load-bearing staircase beam is an inclined beam, and the inclined beam is a U-shaped beam; the transverse section dimension of the vertical side of the U-shaped beam is correspondingly connected to the suspended lightweight conversion column; a horizontal extension section is arranged at the bottom of the inclined beam, and the horizontal extension section is fixedly connected to the suspended cantilever support structure; a suspended main load-bearing connecting beam is connected between adjacent suspended main load-bearing staircase beams.

[0014] Further, the suspended shaped load-bearing beam is a broken line beam including a horizontal area, the horizontal area is connected to a suspended wide platform slab, and the broken line inclined area is connected to a suspended wide step; a suspended secondary structure connecting beam is also connected between the suspended shaped load-bearing beams in the horizontal area.

[0015] Furthermore, the hovering cantilever support end includes a hovering cantilever support main beam and a hovering cantilever support secondary beam. The hovering cantilever support main beam is in a square shape, and the hovering cantilever support secondary beam is a straight beam or an inclined beam connected inside the square shape.

[0016] The hovering cantilever extension end includes a hovering cantilever extension beam and a hovering cantilever extension secondary beam. The hovering cantilever extension beam is arranged parallel to the main stressed cantilever beam structure. There is a hovering cantilever extension secondary beam connected between them, and it encloses a square, a rectangle with a horizontal bar in the middle (like a Chinese character 'Ri'), or a rectangle with a horizontal bar at the top and bottom (like a Chinese character 'Mu') with the outer side of the hovering cantilever support main beam.

[0017] The suspended cantilever support end is in a square, a rectangle with a horizontal bar in the middle (like a Chinese character 'Ri'), or a rectangle with a horizontal bar at the top and bottom (like a Chinese character 'Mu') shape; the suspended cantilever extension end is in a C shape, and the open side encloses a square, a rectangle with a horizontal bar in the middle (like a Chinese character 'Ri'), or a rectangle with a horizontal bar at the top and bottom (like a Chinese character 'Mu') with the suspended cantilever support end; at the top of the side of the suspended cantilever support end and the suspended cantilever extension end close to the large-span suspended staircase, a suspended lightweight conversion column is correspondingly connected.

[0018] The suspended cantilever column is connected corresponding to the frame column.

[0019] Furthermore, a docking connector is arranged on the frame column. The size and material of the docking connector are the same as those of the main stressed cantilever beam structure. The docking connector is detachably connected to the top of the main stressed cantilever beam structure through a cantilever connecting plate. The cantilever connecting plate is in an inverted U shape, and the horizontal part and the two vertical parts are connected by bolts; the hovering cantilever support main beam is assembled and connected, and the top and bottom surfaces at the splicing part are connected by a cantilever docking plate.

[0020] Furthermore, a temporary support system is also provided. The temporary support system includes a group of temporary support columns, temporary diagonal braces connected to both sides of each temporary support column, an operation platform connected to the middle and upper parts of each temporary support column, a top bearing plate connected to the top of each temporary support column, top fasteners connected to the periphery of the top bearing plate, a bottom bearing plate connected to the bottom of the temporary support column, and bottom fasteners connected to the periphery of the bottom bearing plate;

[0021] A group of temporary support columns are arranged corresponding to the number of corrugated shape beams or suspended main stressed staircase beams one by one. Adjacent temporary support columns are connected by strengthening rods, and the bottom of the support columns is connected to the tread plate or the suspended wide tread; the bottom of the temporary diagonal brace is set at the bottom horizontal position;

[0022] Both the top bearing plate and the bottom bearing plate are square plates, and the corresponding top fasteners and bottom fasteners are all inverted L-shaped connecting pieces.

[0023] Furthermore, a construction method for a large-span hovering overweight multi-layer staircase structure is as follows:

[0024] Step 1: Install the frame columns and frame beams from bottom to top in sequence, and carry out welding and bolt connection to form a frame as a whole;

[0025] Step 2: First, assemble the corrugated-shaped beams. Set secondary member beams between the three corrugated-shaped beams and perform welded connections. Flip the whole formed by the corrugated-shaped beams and secondary member beams, assemble the bottom sealing plate, and perform welding. Then, flip the whole formed by the corrugated-shaped beams, secondary member beams, and bottom sealing plate, and sequentially assemble the tread plates and platform plates, and perform welding to form a large-span hovering staircase.

[0026] Step 3: Install the cantilever structure and the main stressed cantilever beam structure from bottom to top in sequence, and perform welded or bolted connections with the frame columns and frame beams. Assemble the suspended cantilever support structures on both sides of the suspended cantilever columns and perform welded connections.

[0027] Step 4: Set the main stressed staircase beams on the suspended cantilever columns and suspended cantilever support structures and perform welded connections. Assemble the suspended main stressed connecting beams between the suspended main stressed staircase beams and perform welded connections to form an integral whole of the suspended main stressed staircase beams and suspended main stressed connecting beams.

[0028] Step 5: Assemble the suspended lightweight conversion columns on the suspended main stressed staircase beams and perform welded connections. Assemble the suspended shaped bearing beams on the tops of the suspended lightweight conversion columns and perform welded connections. Assemble the suspended secondary structure connecting beams between the suspended shaped bearing beams and perform welded connections. Weld the suspended main stressed connecting beams, suspended lightweight conversion columns, suspended shaped bearing beams, and suspended secondary structure connecting beams with each other to form an integral whole. Install the suspended wide treads and suspended wide platform plates from bottom to top in sequence and perform welded connections. Finally, form a large-span suspended staircase.

[0029] Step 6: Install the multi-layer large-span hovering staircases from bottom to top in sequence, perform welded connections at both ends with the main stressed cantilever beam structure and support through the hovering cantilever support structures. When installing the large-span hovering staircases, perform assembly connections through the temporary support system. Finally, install the large-span suspended staircase at the top and perform welded connections at both ends with the suspended cantilever support structures.

[0030] The beneficial effects of the present invention are reflected in:

[0031] 1) Through the design of the large-span hovering and suspended staircases, the structure of the present invention is easy to install and connect, and can be suspended outside the structure. Its staircase structure is not connected to the main structure, and is connected to the outstretched cantilever structure outside the main structure at both ends. Its structure is unique with staggered staircases and large spans, which can take into account the practicality and ornamental value of the staircase.

[0032] 2) Through the settings of the hovering cantilever support structure and the suspended cantilever support structure, it is beneficial to ensure the two-way stress of the cantilever staircase and transfer the stress to the main structure. During the stress process, the large-span hovering staircase itself is also integrally connected through the beam body and the plate body. The large-span suspended staircase is even more through the conversion columns and suspended cantilever columns

[0033] Connected in this way ensures the balance and reliability of the force bearing.

[0034] 3) Through the setting of the temporary support system, the present invention ensures the convenient assembly during the installation of the large-span hovering staircase, and through the hierarchical and grouped setting, the installation of each corrugated-shaped beam is carried out one by one, ensuring the construction accuracy and safety.

[0035] Other features and advantages of the present invention will be described in the subsequent specification, and will be partially obvious from the specification, or understood by implementing the present invention; the main purpose and other advantages of the present invention can be achieved and obtained through the solutions specifically pointed out in the specification. Brief Description of the Drawings

[0036] Figure 1 is the three-dimensional schematic diagram of the large-span hovering overweight multi-layer staircase structure Figure 1 ;

[0037] Figure 2 is the three-dimensional schematic diagram of the large-span hovering overweight multi-layer staircase structure Figure 2 ;

[0038] Figure 3 is the partial three-dimensional schematic diagram of the large-span hovering overweight multi-layer staircase structure;

[0039] Figure 4 is the schematic diagram of the large-span hovering staircase and its connection structure;

[0040] Figure 5 is the schematic diagram of the large-span hovering staircase structure;

[0041] Figure 6 is the schematic diagram of the top structure of the large-span hovering staircase;

[0042] Figure 7 is the schematic diagram of the bottom structure of the large-span hovering staircase;

[0043] Figure 8 is the schematic diagram of the temporary support system;

[0044] Figure 9 is the schematic diagram of the top of the temporary support system;

[0045] Figure 10 is the schematic diagram of the bottom of the temporary support system;

[0046] Figure 11 is the schematic diagram of the large-span suspended staircase and its structure;

[0047] Figure 12 is the schematic diagram of the connection between the large-span suspended staircase and the suspended cantilever support structure.

[0048] Reference Numerals: 1 - Large-span hovering staircase, 011 - Wavy-shaped beam, 012 - Secondary member beam, 013 - Sealing bottom plate, 014 - Platform plate, 015 - Tread plate, 2 - Large-span suspended staircase, 21 - Suspended main load-bearing staircase beam, 22 - Suspended main load-bearing connecting beam, 23 - Suspended lightweight conversion column, 24 - Suspended shaped load-bearing beam, 25 - Suspended secondary structure connecting beam, 26 - Suspended wide tread, 27 - Suspended wide platform plate, 3 - Main load-bearing cantilever beam structure, 4 - Hovering cantilever support structure, 41 - Hovering cantilever support end, 411 - Hovering cantilever support main beam, 412 - Hovering cantilever support secondary beam, 42 - Hovering cantilever extended end, 421 - Hovering cantilever extended beam, 422 - Hovering cantilever extended secondary beam, 5 - Frame column, 6 - Frame beam, 7 - Suspended cantilever support structure, 71 - Suspended cantilever support end, 72 - Suspended cantilever extended end, 73 - Suspended cantilever column, 8 - Frame inclined column, 9 - Cantilever connecting plate, 10 - Cantilever docking plate, 11 - Temporary support column, 12 - Temporary diagonal brace, 13 - Operating platform, 14 - Top bearing plate, 15 - Top fastener, 16 - Bottom bearing plate, 17 - Bottom fastener. Detailed Implementation Manner

[0049] Taking the steel structure construction of a certain science and technology park as an example, there are two types of staircases, hovering and suspended, arranged outside the main frame. As Figures 1 to 12 shown, the large-span hovering overweight multi-story staircase structure includes a multi-story frame structure, a large-span hovering staircase 1 and a large-span suspended staircase 2 cantilevered outside the multi-story frame structure, a hovering cantilever support structure 4 connected between the large-span hovering staircase 1 and the multi-story frame structure, and a suspended cantilever support structure 7 connected between the large-span suspended staircase 2 and the multi-story frame structure.

[0050] In this embodiment, the multi-story frame structure includes frame columns 5, frame beams 6 vertically connected to the frame columns 5, and frame inclined columns 8 connected to the frame columns 5 at the bottom layer; the frame columns 5 and the frame beams 6 form a multi-story frame building, and the frame inclined columns 8 are arranged at the top of one side of the frame columns 5 and intersect with the frame columns 5 extending out on the other side; a large-span suspended staircase 2 is provided at the intersection of the frame inclined columns 8 and the frame columns 5.

[0051] In this embodiment, the large-span hovering staircase 1 includes a group of parallel wavy-shaped beams 011, secondary member beams 012 connected between adjacent wavy-shaped beams 011, sealing bottom plates 013 connected to the bottoms of the wavy-shaped beams 011, platform plates 014 connected to the horizontal positions at the tops of the wavy-shaped beams 011, and tread plates 015 connected between adjacent platform plates 014; both ends of the wavy-shaped beams 011 are respectively connected to the main load-bearing cantilever beam structure 3, and the main load-bearing cantilever beam structure 3 is fixedly connected to the hovering cantilever support structure 4.

[0052] In this embodiment, the hovering cantilever support structure 4 includes a hovering cantilever support end 41 and a hovering cantilever extension end 42, and the hovering cantilever extension end 42 is correspondingly connected to the main stressed cantilever beam structure 3.

[0053] In this embodiment, the corrugated-shaped beam 011 is in the shape of an ascending stepped broken line, including a horizontal section and an inclined section; the corrugated-shaped beams 011 are arranged at intervals in the width direction of the stairs, and the corrugated-shaped beam 011 is a steel beam and is spliced and fixed in sections. The sealing bottom plate 013 is arranged longitudinally along the length of the corrugated-shaped beam 011, a platform plate 014 is arranged at the top of the horizontal area of the corrugated-shaped beam 011, and a tread plate 015 is arranged on the inclined section of the corrugated-shaped beam 011; secondary member beams 012 are connected at intervals in the horizontal area of the corrugated-shaped beam 011.

[0054] In this embodiment, the hovering cantilever support end 41 includes a hovering cantilever support main beam 411 and a hovering cantilever support secondary beam 412. The hovering cantilever support main beam 411 is in a square shape, and the hovering cantilever support secondary beam 412 is a straight beam or an inclined beam connected inside the square shape; the hovering cantilever extension end 42 includes a hovering cantilever protruding beam 421 and a hovering cantilever protruding secondary beam 422. The hovering cantilever protruding beam 421 is arranged parallel to the main stressed cantilever beam structure 3, and a hovering cantilever protruding secondary beam 422 is connected between the two, and together with the outer side of the hovering cantilever support main beam 411, it encloses a square, a rectangle with a horizontal bar in the middle, or a rectangle with a vertical bar in the middle.

[0055] In this embodiment, for the construction and installation of the large-span hovering staircase 1, a temporary support system is also provided. The temporary support system includes a group of temporary support columns 11, temporary diagonal braces 12 connected to both sides of each temporary support column 11, an operation platform 13 connected to the middle and upper parts of each temporary support column 11, a top bearing plate 14 connected to the top of each temporary support column 11, top fasteners 15 connected to the periphery of the top bearing plate 14, a bottom bearing plate 16 connected to the bottom of the temporary support column 11, and bottom fasteners 17 connected to the periphery of the bottom bearing plate 16.

[0056] In this embodiment, a group of temporary support columns 11 are arranged one by one corresponding to the number of corrugated-shaped beams 011 or floating main stressed staircase beams 21. The adjacent temporary support columns 11 are connected by strengthening bars, and the bottom of the support columns is connected to the tread plate 015 or the floating wide tread 26; the bottom of the temporary diagonal brace 12 is arranged at the bottom horizontal position; both the top bearing plate 14 and the bottom bearing plate 16 are square plates, and the corresponding top fasteners 15 and bottom fasteners 17 are both inverted L-shaped connecting pieces.

[0057] In this embodiment, the long-span suspended staircase 2 includes a group of obliquely arranged suspended main load-bearing staircase beams 21 that are parallel in the long upward direction, suspended main load-bearing connecting beams 22 connected between adjacent suspended main load-bearing staircase beams 21, suspended lightweight conversion columns 23 connected to the suspended main load-bearing staircase beams 21, suspended shaped load-bearing beams 24 connected to the suspended lightweight conversion columns 23, suspended secondary structure connecting beams 25 connected between adjacent suspended shaped load-bearing beams 24, suspended wide platform plates 27 connected to the horizontal regions at the tops of the suspended lightweight conversion columns 23, and suspended wide steps 26 connected between adjacent suspended wide platform plates 27; both ends of the suspended main load-bearing staircase beams 21 are respectively connected to the suspended cantilever support structure 7; the suspended cantilever support structure 7 includes a suspended cantilever support end 71, a suspended cantilever extension end 72 connected to the extended side of the suspended cantilever support end 71, and a suspended cantilever column 73 connected to the connection between the suspended cantilever support end 71 and the suspended cantilever extension end 72; the suspended cantilever column 73 is correspondingly connected to the multi-layer frame structure.

[0058] In this embodiment, the suspended main load-bearing staircase beam 21 is an oblique beam, and the oblique beam is a U-shaped beam; the transverse section dimension of the vertical side of the U-shaped beam is correspondingly connected to the suspended lightweight conversion column 23; a horizontal extension section is provided at the bottom of the oblique beam, and the horizontal extension section is fixedly connected to the suspended cantilever support structure 7; a suspended main load-bearing connecting beam 22 is connected between adjacent suspended main load-bearing staircase beams 21.

[0059] In this embodiment, the suspended shaped load-bearing beam 24 is a folded beam including a horizontal region, the horizontal region is connected to the suspended wide platform plate 27, and the folded oblique region is connected to the suspended wide step 26; a suspended secondary structure connecting beam 25 is also connected between the suspended shaped load-bearing beams 24 in the horizontal region. The suspended cantilever support end 71 is in the shape of a square, a rectangle with a vertical bar in the middle, or a rectangle with two vertical bars in the middle; the suspended cantilever extension end 72 is in the shape of a C, and the open side and the suspended cantilever support end 71 enclose a shape of a square, a rectangle with a vertical bar in the middle, or a rectangle with two vertical bars in the middle; the top of the suspended cantilever support end 71 and the suspended cantilever extension end 72 adjacent to the long-span suspended staircase 2 are correspondingly connected to the suspended lightweight conversion column 23.

[0060] In this embodiment, the suspended cantilever column 73 is correspondingly connected to the frame column 5. A docking connector is provided on the frame column 5. The size and material of the docking connector are the same as those of the main load-bearing cantilever beam structure 3. The docking connector and the top of the main load-bearing cantilever beam structure 3 are detachably connected through a cantilever connecting plate 9. The cantilever connecting plate 9 is in the shape of an inverted U, and the horizontal part and the two vertical parts are connected by bolts; the suspended cantilever support main beam 411 is assembled and connected, and the top and bottom surfaces at the splicing position are connected through a cantilever docking plate 10.

[0061] Combined with FIGS. 1 to 12, a construction method of a long-span suspended overweight multi-layer staircase structure is further described. The specific steps are as follows:

[0062] Step 1: Install the frame columns 5 and frame beams 6 successively from bottom to top, and perform welding and bolt connection to form the overall frame.

[0063] Step 2: First, assemble the corrugated-shaped beam 011. Secondary member beams 012 are arranged between the three corrugated-shaped beams 011 and welded together. Flip the whole formed by the corrugated-shaped beam 011 and the secondary member beams 012, assemble the bottom sealing plate 013 and weld it. Then flip the whole formed by the corrugated-shaped beam 011, the secondary member beams 012 and the bottom sealing plate 013, and sequentially assemble the tread plate 015 and the platform plate 014 and weld them to form the large-span hovering staircase 1.

[0064] Step 3: Install the cantilever structure and the main stressed cantilever beam structure 3 from bottom to top, and weld or bolt-connect them to the frame column 5 and the frame beam 6. Assemble the suspended cantilever support structures 7 on both sides of the suspended cantilever column 73 and weld them together.

[0065] Step 4: Set the main stressed staircase beams on the suspended cantilever column 73 and the suspended cantilever support structures 7 and weld them. Assemble the suspended main stressed connecting beams 22 between the suspended main stressed staircase beams 21 and weld them to make the suspended main stressed staircase beams 21 and the suspended main stressed connecting beams 22 form a whole.

[0066] Step 5: Assemble the suspended lightweight conversion columns 23 on the suspended main stressed staircase beams 21 and weld them. Assemble the suspended shaped bearing beams 24 on the tops of the suspended lightweight conversion columns 23 and weld them. Assemble the suspended secondary structure connecting beams 25 between the suspended shaped bearing beams 24 and weld them. Weld the suspended main stressed connecting beams 22, the suspended lightweight conversion columns 23, the suspended shaped bearing beams 24, and the suspended secondary structure connecting beams 25 to the suspended main stressed staircase beams 21 and the suspended main stressed connecting beams 22 to form a whole. Install the suspended wide treads 26 and the suspended wide platform plates 27 from bottom to top and weld them. Finally, form the large-span suspended staircase 2.

[0067] Step 6: Install the multi-layer large-span hovering staircases 1 from bottom to top, weld the two ends to the main stressed cantilever beam structure 3 and support them through the hovering cantilever support structures 4. When installing the large-span hovering staircases 1, assemble and connect them through the temporary support system. Finally, install the large-span suspended staircase 2 at the top and weld the two ends to the suspended cantilever support structures 7.

[0068] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any variations or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A large-span hovering overweight multi-layer staircase structure, characterized in that, it includes a multi-layer frame structure, a large-span hovering staircase (1) and a large-span suspended staircase (2) connected to the outer cantilever of the multi-layer frame structure, a hovering cantilever support structure (4) connected between the large-span hovering staircase (1) and the multi-layer frame structure, and a suspended cantilever support structure (7) connected between the large-span suspended staircase (2) and the multi-layer frame structure; The large-span hovering staircase (1) includes a group of wavy-shaped beams (011) arranged in parallel, secondary member beams (012) connected between adjacent wavy-shaped beams (011), a bottom sealing plate (013) connected to the bottom of the wavy-shaped beams (011), a platform plate (014) connected to the horizontal part at the top of the wavy-shaped beams (011), and a tread plate (015) connected between adjacent platform plates (014); both ends of the wavy-shaped beams (011) are respectively connected to the main stressed cantilever beam structure (3), and the main stressed cantilever beam structure (3) is fixedly connected to the hovering cantilever support structure (4); The hovering cantilever support structure (4) includes a hovering cantilever support end (41) and a hovering cantilever extension end (42), and the hovering cantilever extension end (42) is correspondingly connected to the main stressed cantilever beam structure (3); The large-span suspended staircase (2) includes a group of obliquely arranged suspended main stressed staircase beams (21) arranged in parallel in the long direction, suspended main stressed connecting beams (22) connected between adjacent suspended main stressed staircase beams (21), suspended lightweight conversion columns (23) connected to the suspended main stressed staircase beams (21), suspended shaped bearing beams (24) connected to the suspended lightweight conversion columns (23), suspended secondary structure connecting beams (25) connected between adjacent suspended shaped bearing beams (24), a suspended wide platform plate (27) connected to the horizontal area at the top of the suspended lightweight conversion columns (23), and suspended wide treads (26) connected between adjacent suspended wide platform plates (27); both ends of the suspended main stressed staircase beams (21) are respectively connected to the suspended cantilever support structure; The suspended cantilever support structure (7) includes a suspended cantilever support end (71), a suspended cantilever extension end (72) connected to the outstretched side of the suspended cantilever support end (71), and a suspended cantilever column (73) connected to the connection between the suspended cantilever support end (71) and the suspended cantilever extension end (72); the suspended cantilever column (73) is correspondingly connected to the multi-layer frame structure.

2. A large-span hovering overweight multi-layer staircase structure according to claim 1, characterized in that, the multi-layer frame structure includes frame columns (5), frame beams (6) vertically connected to the frame columns (5), and frame inclined columns (8) connected to the bottom layer frame columns (5); the frame columns (5) and the frame beams (6) form a multi-layer frame building body, and the frame inclined columns (8) are arranged at the top of one side of the frame columns (5) and intersect with the frame columns (5) extending out on the other side; a large-span suspended staircase (2) is arranged at the intersection of the frame inclined columns (8) and the frame columns (5).

3. A large-span hovering overweight multi-layer staircase structure according to claim 2, characterized in that, The corrugated shaped beam (011) is in a rising stepped broken line shape, including a horizontal section and an inclined section; the corrugated shaped beams (011) are arranged at intervals in the width direction of the staircase, and the corrugated shaped beams (011) are steel beams and are spliced and fixed in sections.

4. A large-span hovering overweight multi-story staircase structure as described in claim 3, characterized in that, the sealing bottom plate (013) is arranged longitudinally along the length of the corrugated shaped beam (011), a platform plate (014) is arranged at the top of the horizontal area of the corrugated shaped beam (011), and a tread plate (015) is arranged on the inclined section of the corrugated shaped beam (011); secondary member beams (012) are connected at intervals in the horizontal area of the corrugated shaped beam (011).

5. A large-span hovering overweight multi-story staircase structure as described in claim 4, characterized in that, the suspended main load-bearing staircase beam (21) is an inclined beam, and the inclined beam is a U-shaped beam; the transverse cross-sectional dimension of the vertical side of the U-shaped beam is correspondingly connected to the suspended lightweight conversion column (23); a horizontal extension section is arranged at the bottom of the inclined beam, and the horizontal extension section is fixedly connected to the suspended cantilever support structure (7); a suspended main load-bearing connecting beam (22) is connected between adjacent suspended main load-bearing staircase beams (21).

6. A large-span hovering overweight multi-story staircase structure as described in claim 5, characterized in that, the suspended shaped load-bearing beam (24) is a broken line shaped beam including a horizontal area, a suspended wide platform plate (27) is connected to the horizontal area, and a suspended wide tread (26) is connected to the broken line inclined area; suspended secondary structure connecting beams (25) are also connected between the suspended shaped load-bearing beams (24) in the horizontal area.

7. A large-span hovering overweight multi-story staircase structure as described in claim 3, characterized in that, the hovering cantilever support end (41) includes a hovering cantilever support main beam (411) and a hovering cantilever support secondary beam (412), the hovering cantilever support main beam (411) is in a square shape, and the hovering cantilever support secondary beam (412) is a straight beam or an inclined beam connected inside the square shape; the hovering cantilever extension end (42) includes a hovering cantilever extending beam (421) and a hovering cantilever extending secondary beam (422), the hovering cantilever extending beam (421) is arranged parallel to the main load-bearing cantilever beam structure (3), a hovering cantilever extending secondary beam (422) is connected between the two, and it encloses a square, a rectangle or an eye shape with the outer side of the hovering cantilever support main beam (411); the suspended cantilever support end (71) is in a square, a rectangle or an eye shape; the suspended cantilever extension end (72) is in a C shape, and the open side encloses a square, a rectangle or an eye shape with the suspended cantilever support end (71); the top of the suspended cantilever support end (71) and the suspended cantilever extension end (72) adjacent to the large-span suspended staircase (2) are correspondingly connected to the suspended lightweight conversion column (23); the suspended cantilever column (73) is correspondingly connected to the frame column (5).

8. A large-span hovering overweight multi-story staircase structure as described in claim 7, characterized in that, A docking connector is provided on the frame column (5), and the size and material of the docking connector are the same as those of the main stressed cantilever beam structure (3). The docking connector is detachably connected to the top of the main stressed cantilever beam structure (3) through a cantilever connecting plate (9). The cantilever connecting plate (9) is in an inverted U shape, and the horizontal part and the two vertical parts are connected by bolts; the hovering cantilever support main beam (411) is assembled and connected, and the top and bottom surfaces of the splicing part are connected by a cantilever docking plate (10).

9. A large-span hovering overweight multi-layer staircase structure according to claim 1, characterized in that, a temporary support system is further provided, and the temporary support system includes a group of temporary support columns (11), temporary diagonal braces (12) connected to both sides of each temporary support column (11), an operation platform (13) connected to the middle and upper parts of each temporary support column (11), a top bearing plate (14) connected to the top of each temporary support column (11), a top fastener (15) connected to the periphery of the top bearing plate (14), a bottom bearing plate (16) connected to the bottom of the temporary support column (11), and a bottom fastener (17) connected to the periphery of the bottom bearing plate (16); A group of temporary support columns (11) are arranged one by one corresponding to the number of the corrugated-shaped beams (011) or the suspended main stressed staircase beams (21). The adjacent temporary support columns (11) are connected by strengthening rods, and the bottom of the support columns is connected to the tread plate (015) or the suspended wide tread (26); the bottom of the temporary diagonal brace (12) is arranged at the bottom horizontal position; Both the top bearing plate (14) and the bottom bearing plate (16) are square plates, and the corresponding top fastener (15) and bottom fastener (17) are both inverted L-shaped connecting pieces.

10. A construction method of a large-span hovering overweight multi-layer staircase structure according to any one of claims 1 to 9, characterized in that, the specific steps are as follows: Step 1: Install the frame columns (5) and frame beams (6) sequentially from bottom to top, and perform welding and bolting connections to form a frame as a whole; Step 2: First assemble the corrugated-shaped beams (011), arrange secondary member beams (012) between the three corrugated-shaped beams (011), and perform welding connections; turn over the whole formed by the corrugated-shaped beams (011) and the secondary member beams (012), assemble the sealing bottom plate (013), and perform welding; then turn over the whole formed by the corrugated-shaped beams (011), the secondary member beams (012), and the sealing bottom plate (013), and sequentially assemble the tread plate (015) and the platform plate (014), and perform welding; to form a large-span hovering staircase (1); Step 3: Install the cantilever structure and the main stressed cantilever beam structure (3) sequentially from bottom to top, and perform welding or bolting connections with the frame columns (5) and frame beams (6); assemble the suspended cantilever support structures (7) on both sides of the suspended cantilever columns (73), and perform welding connections; Step 4: Set the main stressed staircase beams on the suspended cantilever columns (73) and the suspended cantilever support structures (7), and perform welding connections; assemble the suspended main stressed connecting beams (22) between the suspended main stressed staircase beams (21), and perform welding connections to form a whole of the suspended main stressed staircase beams (21) and the suspended main stressed connecting beams (22); Step Five: Assemble the suspended lightweight conversion column (23) on the suspended main load-bearing staircase beam (21) and perform welded connection; assemble the suspended shaped load-bearing beam (24) on top of the suspended lightweight conversion column (23) and perform welded connection; assemble the suspended secondary structure connecting beam (25) between the suspended shaped load-bearing beams (24) and perform welded connection; weld the suspended main load-bearing connecting beam (22), the suspended lightweight conversion column (23), the suspended shaped load-bearing beam (24), the suspended secondary structure connecting beam (25) to the suspended main load-bearing staircase beam (21) and the suspended main load-bearing connecting beam (22) to form an integral whole; install the suspended wide treads (26) and the suspended wide platform slabs (27) successively from bottom to top and perform welded connection; finally, form the long-span suspended staircase (2). Step Six: Install the multi-layer long-span hovering staircases (1) successively from bottom to top, and perform welded connection at both ends to the main load-bearing cantilever beam structure (3) and support through the hovering cantilever support structure (4); during the installation of the long-span hovering staircase (1), assemble and connect it through the temporary support system; finally, install the long-span suspended staircase (2) at the top and perform welded connection at both ends to the suspended cantilever support structure (7).

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